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<h3 align="center">浮动框架应用</h3>

<iframe name="left" src="http://www.pku.edu.cn" scrolling="auto" ></iframe>&nbsp;&nbsp;
<iframe name="right" src="http://www.seu.edu.cn" ></iframe>

<p align="center">
    <a href="https://www.baidu.com" target="left" >在左边浮动框架中打开百度</a>
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    <a href="http://www.qq.com" target="right">在右边浮动框架中打开腾讯</a>
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